<html>
    <head>
        <meta charset="utf-8">
    </head>
    <body>
        <p>     请输入两个整数</p>

        <form action="calculateCgi" method="POST" accept-charset="UTF-8">
            numL:<input type="text" name="numLeft">
            <br>
            numR:<input type="text" name="numRight">
            <br><br>
            <input type="submit" value="send">
        </form> 

        <p>点击send，表单数据会提交给calculateCgi,进行后台计算处理</p>

    </body>
</html>